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// Copyright 2011 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
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//      http://www.apache.org/licenses/LICENSE-2.0
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<html>
<head>
<title></title>
<script src="../../../third_party/closure-library/closure/goog/base.js"></script>
<script>
goog.require('goog.testing.jsunit');
</script>
<script src="../../../src/traceur.js"></script>
</head>
<body>
<script>

// Positive tests are in the feature/ArrowFunctions directory.
// These are negative tests that test for specific error messages.

function compileAndReturnErrors(source) {
  var name = 'test';
  var errors = [];

  var errorReporter = {
    reportError: function(position, message) {
      errors.push({position: String(position), message: message});
    },
    hadError: function() {
      return errors.length > 0;
    }
  };

  var sourceFile = new traceur.syntax.SourceFile(name, source);
  traceur.codegeneration.Compiler.compileFile(errorReporter, sourceFile,
                                              window.location.href);
  return errors;
}

function testInvalidFatArrow() {
  var source = 'var f = (this = this, a, b) => a + b;';
  var errors = compileAndReturnErrors(source);
  assertEquals(1, errors.length);
  assertEquals('test(1, 10)', errors[0].position);
  assertEquals('"this" parameter cannot be used with "=>", use "->" instead',
               errors[0].message);
}

function testInvalidFormalParameters() {
  var source = 'var f = (a, b + 5) => a + b;';
  var errors = compileAndReturnErrors(source);
  assertEquals(1, errors.length);
  assertEquals('test(1, 13)', errors[0].position);
  assertEquals('invalid formal parameter for "=>" expression', errors[0].message);
}

function testInvalidThisBindingLocation() {
  var source = 'var f = (a, this = this, b) => a + b;';
  var errors = compileAndReturnErrors(source);
  assertEquals(1, errors.length);
  assertEquals('test(1, 13)', errors[0].position);
  assertEquals('assignment to "this" must occur before other parameters',
               errors[0].message);
}

</script>
</body>
</html>
